y x Figure 2.9 In Exercises 15-28, find the domain and range of the gi- tions. Use a graphing utility to verify your answer. 15. y = x + 2 17. y = √x-4 19. y = √4-x² 21. y = x√x - 3 23. y = (x-1)√x-2 25. y = x- 1 16. y = x² + 2 18. y = √9-2 20. y = √√5-x 22. y = x²√x-4 24. y = x²x²-1 26. y = محمد X x-1 2.2 Limits The notion o are bon